汽车工程专业英语(考试专用资料 部分)
李俊玲 汽车工程专业英语1
第一章汽车基础今天的汽车平均一辆有15000多个装配在一起工作的、单个零件。
这些零件可以分成四类：车体、发动机、底盘和电气系统（图1-1和图1-2）。
1．1车体汽车车体是一个金属板壳，它带有窗、门、发动机罩和行李箱盖。
它为发动机、旅客和货物提供了一个护罩。
车身设计要使旅客感到安全和舒适。
车身外形为车辆提供了一个有吸引力、有色彩和现代特征。
轿车有一个封闭的车身，最多四个门，允许旅客进入车厢。
设计还考虑行旅和其他物品的储放。
轿车也可以称之为saloon,传统的轿车有固定的顶棚。
除了有两个门之外，同一个车身有软的顶棚，这些车辆通常称之为敞蓬车（图1-3）。
皮卡载运货物。
为了更大的货物质量，皮卡往往有更强的车底盘零件和悬挂装臵。
轻型有蓬货车可能基于普通轿车设计或在设计的，它有最大的货物装载空间可供利用。
运输货物的商用车车体是为特殊目的设计的，油罐车运输液体、翻斗车运土或堆积的粮食，平板车和有蓬货车用于一般货物运输。
公共汽车和长途客车一般是四轮支撑车辆，但用多个车轮和轴。
有时用铰链连接以增加容量。
公共汽车和长途客车可以是单层或双层。
公共汽车一般用于城市内和市郊间运输，长途客车更为豪华，用于远距离运输。
1．2发动机发动机是动力装臵。
内燃发动机最常用，它是通过燃烧发动机气缸内的液体燃料获得动力。
有两种类型的发动机：汽油发动机（也叫火花点火发动机）和柴油发动机（也叫压缩点火发动机）。
两种发动机都叫做热发动机，燃烧燃料产生热，热在气缸内产生气，增加了缸内的压力，并使连接到动力传动链上的轴转动。
发动机气缸布臵方法叫做发动机配臵。
直列发动机的气缸成一线排列，这样设计产生了简单的发动机缸体铸件。
在车辆应用中，气缸数量从2个到6个。
一般地，气缸是垂直的。
当气缸数量增加时，缸体和曲轴的长度就成为问题。
避免这个问题的一个方法采用V型配臵。
这样设计使发动机缸体和曲轴更短，也更具有缸性。
前臵发动机可纵向安装，它既能驱动前轮又能驱动后轮。
车辆工程专业英语概述
车辆工程专业英语概述The Principal Components Of Automotive张可可2021210612The Principal Components Of Automotive contains the body, the engine , the chassis , the power train system, the steering system, the suspension system and wheels , the braking system and the electrical and electronic system.1 The bodyAn automobile body is a sheet metal shell with windows, doors, a hood anda trunk deck built into it.It provides a protective covering for the engine, passengers and cargo. It is designed to keep passengers safe and comfortable. The body styling provides an attractive, colorful, modern appearance for the vehicle.2 The engineThe engine acts as the power unit. The internal combustion engine is most common: this obtains its power by burning a liquid fuel inside the engine cylinder. There are two types of engine: gasoline (also called a spark-ignition engine) and diesel (also called compression-ignition engine). Both engines are called heat engines. the burning fuel generates heat which causes the gas inside the cylinder to increase its pressure and supply power torotate a shaft connected to the power train.3 The chassisChassis is the frame on which the engine, body, wheels etc. are built. The chassis is an assembly of those systems that are the major operating parts ofa vehicle. It includes power train which conveys the drive to the wheels, steering which controls the direction of movement，suspension and wheels which absorb the road shocks, and brake which slows down the vehicle.4 The power train systemThe power train transfers turning effort from the engine to the driving wheels. It include a clutch ( manual transmission) or a torque converter (automatic transmission), a transmission drive shaft, final drive and differential gear s and driving axles. Alternatively, a transaxle may be used.A transaxle is a self-contained unit with a transmission, final drive gears and differential located in one casing.The directional motion of vehicle is controlled by a steering system. A basic steering system has 3 main parts: a steering box connected to the steering wheel, the linkage connecting the steering box to the wheel assembly at the front wheels and front suspension parts to let the wheel assemblies pivot. When the driver turns the steering wheel，a shaft from the steering column turns the steering gear. The steering gear movestie-rods that connect to the front wheels. The tie-rods move the front wheels to turn the vehicle right or left.5 The braking system and wheelsThe purpose of the complete suspension system is to isolate the vehicle body from road shocks and vibrations, which will otherwise be transferred to the passengers and load. It must also keep the tires in contact with the road regardless of road surface. A basic suspension system consists of springs, axles, shock absorbers, arms, rods and ball joints.The tire provides a cushion between the vehicle and the road to reduce the transmission of road shocks. It also provides friction to allow the vehicle to perform its normal operations. Modern tires are manufactured from a range of materials. The rubber is mainly synthetic. Two types of tire construction are common: cross-ply and radial. Most passenger cars now use radial tires, and radials are replacing cross-ply tires on 4-wheel drives and heavy vehicles.6 The braking systemDrum brakes have a drum attached to the wheel hub, and braking occurs by means of brake shoes expanding against the inside of the drum. With disc brakes, a disc attached to the wheel hub is clenched between two brakepads. On lightvehicles, both of these systems are hydraulically operated. The brake pedal operates a master cylinder. Hydraulic lines and hoses connect the master cylinder to brake cylinders at the wheels. Most modern light vehicles have either disc brakes on the front wheels and drum brakes on the rear or disc brakes on a11 4 wheels. Disc brakes require greater forces to operate them. A brake booster assists the driver by increasing the force applied to the master cylinder when the brake is operated.7 The electrical and electronic systemThe charging system provides electrical energy for all of the electrical components on the vehicle. A typical charging system includes: a battery, an alternator, a voltage regulator which is usually integral to the alternator, a charging warning or indicator light and wiring that complete the circuits. The battery provides electrical energy for starting, then once the engine is running the alternator powers all the electrical components of the vehicle. The alternator also charges the battery to replace the energy used to start the engine. The voltage regulator prevents overcharging. The starting system consists of the battery, starter, flywheel ring gear, cables，and the ignition switch. The starter motor is powered by the battery. During starting, the pinion of the starter motor engages withthe flywheel ring gear and the starter motor then operates to crank the engine.Electrical is related to the electricity while electronic related to the semi-conductor or microcomputers. The electrical system provides electricity to the starter, ignition, lights and heater. The electricity level is maintained by a charging circuit.That's all.感谢您的阅读，祝您生活愉快。
车辆工程 汽车专业英语课件-汽车基础知识部分 - Chapter 5 Braking System
鼓式制动器 盘式制动器 制动蹄 制动鼓 轮缸 摩擦衬片 制动钳 制动液 单向阀
Chapter 5 Braking Systems
5.1 Overview of Braking Systems
The braking system is very important to a car. If your brakes don’t work properly, the result can be disastrous. Brakes are actually energy conversion devices, which convert the kinetic energy of the vehicle into thermal energy.
本节课学习内容、目标和重点难点
学习内容
Chapter 5 Braking Systems
学习目标 难点重点
1.掌握制动系统的基本组成、类型、ABS系统 主要零件的英文名称
2.提高翻译技巧，能较熟练翻译课文
1.重点是英文专业术语记忆 2.难点是生词偏多、ABS控制原理原理
Chapter 5 Braking Systems
n.卡钳，测径器；v. 用卡钳测量
['mæɡnitaiz] vt. 吸引；使磁化vi. 磁化；受磁
[ri'tɑ:də]
n. 缓凝剂；减速器；阻滞剂；迟 缩剂
[hai'drɔ:lik]
adj. 液压的；水力的；水力学的
[kəm'pɑ:tmənt]
n. 隔间；区划；卧车上的小客房 vt. 分隔；划分
['bu:stə]
2 .Disc Brake The main parts of a disc brake include the brake cylinder, the brake disc and the brake calipers. The disc brake is a lot like the brakes on a bicycle. Bicycle brakes have a caliper, which squeezes the brake pads against the wheel. In a disc brake, the brake pads squeeze the rotor instead of the wheel, and the force is transmitted hydraulically instead of through a cable. Friction between the pads and the disc slows the disc down (Fig. 5-4 and 5-5).
翻译_汽车工程专业英语
第一章汽车基础当今的汽车一般都由15000多个分散、独立且相互配合的零部件组成。
这些零部件主要分为四类：车身、发动机、底盘和电气设备。
Body：车身Engine：发动机Brakes：制动器Power train：传动系Steering：转向系Electrical：电器及电子设备Suspension：悬架Layout of a passenger car：乘用车总布臵Layout of a commercial vehicle：商用车总布臵1.1 车身汽车车身是由车窗、车门、发动机罩和行李箱盖焊接在金属板外壳内而成。
金属板外壳将发动机、乘客和货物覆盖以提供保护。
车身的设计要保证乘客安全舒适。
车身的款式使得汽车看起来漂亮迷人、色彩斑斓、时尚前卫。
私家轿车有一个封装起来的车身，4个大车门允许乘客进出车厢。
这个设计也可放臵行李或其他货物。
私家轿车也可以称为拥有固定车顶的传统车辆。
有许多类似车身设计的活顶式车除了拥有两个车门，其他的设计和敞篷车大致一样。
皮卡或载重汽车。
通常它们有比轿车大的底盘和悬架来支撑重物质量。
型运载货车基于轿车的设计并改装以便腾出最大限度的空间来装载货物。
商用运载货物车辆的车身是专用设计的。
如罐车运载液体，自卸车搬运泥土或大批谷物，平板车和货车通常用来运载普通货物。
公交车或长途汽车通常是4轮固定模式的车辆，但会用到大量的车轮和轮轴。
有时，铰接式公交车是为了增加容量。
公交车和货车可以做成单层或双层的。
长途汽车常用于长距离运载，且费用比较昂贵，因此市区里就会用到公交车，如市郊间上下班时用于交通运输。
1.2 发动机发动机作为动力装臵。
最常见的内燃机通过燃烧发动机气缸里的液体燃料而获得能量。
内燃机有两种类型：汽油机（又称为点燃式发动机）和柴油机（又称为压燃式发动机）。
两种类型均称为热力发动机。
燃烧燃料产生的热量使汽缸里气体的气压增加并提供能量通过传动轴连接到传动系统。
发动机气缸的排列方式称为发动机配臵。
（完整版）车辆工程专业英语核心词汇总汇
Unit 1 Automobile Basicsspare wheel 备胎lubricate 润滑（名词是lubrication ）gearbox 变速箱frame 车架transmission 变速器hood 发动机罩（=bonnet ）→ decklid = trunklid 行李箱盖chassis chassis ['ʃæsi]['ʃæsi]底盘crankshaft 曲轴carburetor carburetor [,kɑːbjʊ'retə][,kɑːbjʊ'retə]化油器spark plug 火花塞clutch 离合器driveshaft 传动轴drive train 传动链petroleum petroleum [pə'trolɪəm][pə'trolɪəm]石油propane 丙烷gasohol 酒精混合燃料Unit 2 Bodies bracket 支架labyrinth labyrinth ['læbərɪnθ]['læbərɪnθ]迷宫cross-member 横梁interposition 干涉steering wheel 方向盘three-box car 三厢车hinge 铰链bumper 保险杠windshield 挡风玻璃windshield wiper 雨刮器interior trim 内饰instrument panel = dashboard 仪表盘safety belt 安全带unibody 承载式车身rubber bush 橡胶衬套vibration 振动ancillary 辅助的stress 应力fender 翼子板curb weight 整备质量intake duct 进气道fatigue 疲劳demist 除雾loudspeaker 扬声器Unit 3 Engines sprocket 链齿轮cylinder 汽缸connecting rod 连杆valve 气门camshaft 凸轮轴lifter 挺杆rocker arm 摇臂valve train 配气机构Unit 4 Fuel System clamp 夹具fuel rail 油轨intake manifold 进气歧管exhaust manifold 排气歧管throttle 节气门squirt 喷射hothouse 温室Unit 5 Electric System circuit 电路coil 线圈ignition 点火alternator 发电机ammeter 安培计voltage regulator 稳压器insulation 绝缘distributor 分电器transistor 晶体管fuse 保险relay 继电器headlights 大灯dome light 顶灯fog lamp 雾灯dash 仪表板halogen 卤素filament 灯丝LED（Light Emitting Diodes）发光二极管Unit 6 Cooling and Lubricating Systems wear 磨损contamination 污染coolant 冷却液radiator 散热器thermostat 节温器grill 格栅，进风口centrifugal force 离心力centripetal force 向心力boiling point 沸点overflow tube 溢流管wax 蜡oil filter 机油滤清器oil pan 油底壳oil galleries 油孔sealing 密封nozzle 喷嘴meshing gear 啮合齿轮bearing 轴承horsepower 马力Unit 7 Exhaust and Emission Control System header pipe 集气管three-way catalytic converter 三元催化转化器三元催化转化器catalyst 催化剂muffler 消音器hanger 挂钩heat shield 隔热板heavy-duty 耐用的，重负荷的fume 烟hydrocarbon 碳氢化合物evaporate 蒸发（名词后缀是-ion）additive 添加剂coupling 连接器gasket 垫圈odorless 无味的positive crankcase ventilation 曲轴箱强制通风曲轴箱强制通风grove 沟槽oil dipstick 油尺vacuum valve 真空阀charcoal canister 活性炭阀idle speed 怠速EGR（Exhaust Gas Recirculation）废气再循环platinum 铂palladium 钯rhodium 铑ceramic 陶瓷的honeycomb 蜂窝状Unit 8 Suspension System, Steering System and Brake System passenger cars/vehicles 乘用车commercial cars/vehicles 商用车bump 路面凸起alignment 校准steering knuckle 转向节swivel 旋转spring 弹簧（sprite 雪碧）ball joint 球型接头shock absorber = damper 减震器bounce 谈起bushing 衬套non-independent suspension 非独立悬架recirculating call steering systems 循环球式转向器rack-and-pinion steering systems 齿轮齿条式转向器齿轮齿条式转向器lorry 货车（也有卡车的意思）truck 卡车worm gear 涡轮蜗杆机构steering linkage 转向连杆steering column 柱pitman arm 转向摇臂track rod 转向横拉杆idler arm 随动臂sleeve 衬套master cylinder 制动主缸lever 杠杆brake booster 制动助力器engine compartment 发动机舱housing 外壳，壳体malfunction 故障，失灵cable 线缆caliper 卡钳brake pads 摩擦片hub 轮毂squeeze 压缩brake shoe 制动蹄Unit 9 Drive Trains and Axlesdrive axles 驱动桥MT（Manual Transmission）手动变速器AT（Automatic Transmission）自动变速器CVT（Continuously Variable Transmission）无级变速器stationary 静态的release bearing 分离轴承clutch fork 离合器拨叉pressure plate 压盘tension 张力hydraulic circuit 液压回路throw-out bearing = release bearing 分离轴承torque converter 液力变矩器friction 摩擦synchronizer 同步器shift linkage 换挡连杆机构turbine 涡轮stator 导轮planet gears 行星齿轮planet gear carrier 行星架行星架ring gear 齿圈slip yoke 滑动叉differential 差速器axle housing 桥壳unsprung weight 簧下质量sprung weight 簧上质量Unit 10 Safety, Security and Navigation Systems occupant = passenger乘员buckle 安全带插扣impact 碰撞regulatory 法规nylon 尼龙stiffness 刚度abrasion 磨损kinetic 运动学的inertia 惯性trigger 触发器resister 电阻GPS（Global Positioning System）全球定位系统补充：assembly line装配线stabilizer bar横向稳定杆cylinder block 气缸体cast iron/aluminium 铸铁/铝turbocharge 涡轮增压supercharge 机械增压exhaust pipe 排气管displacement排量compression ratio压缩比valve overlap 气门重叠thrust washer 止推垫圈ductile iron 球墨铸铁constant velocity joint 等速万向节等速万向节SUV （Sport Utility Vehicle ）运动型多功能车）运动型多功能车常见品牌：Toyota 丰田Honda 本田Nissan 日产Mazda 马自达Lexus 雷克萨斯Suzuki 铃木Mitsubishi 三菱General Motors 通用Cadillac 凯迪拉克Lincoln 林肯Ford 福特Chrysler 克莱斯勒Corvette 克尔维特Mercedes Mercedes [mə'sidi:z][mə'sidi:z][mə'sidi:z] Benz 梅赛德斯-奔驰Volkswagen 大众Audi 奥迪Rolls Royce 劳斯莱斯Bentley 宾利Ferrari 法拉利Maserati 玛莎拉蒂Aston Martin 阿斯顿马丁Jaguar 捷豹Porsche 保时捷Lamborghini 兰博基尼Koenigsegg 柯尼塞格Bugatti 布加迪Pagani 帕加尼Alfa Romeo 阿尔法罗密欧Volvo 沃尔沃Lotus 莲花a m n d A l t h g sb i e o f rRenault 雷诺Hyundai 现代Peugeot 标志Opel 欧宝Fiat 菲亚特Skoda 斯柯达Citroen 雪铁龙Dodge 道奇。
车辆工程-汽车专业英语课件-汽车基础知识部分---Chapter-3-Power-Train--3
['flaiwi:l] [spriŋ] ['ɔpəreit] ['mekənizəm] [trænz'mi∫ən] [tɔ:k]
n.飞轮 n.弹簧 vt.操作，控制，使运行 n.（机械）结构，机械装置 n.变速器 n.扭转力；转矩
压盘
Chapter 3 Power Train 3.1 Clutches
摩擦式限滑差速器
Chapter 3 Power Train 3.2 Manuel Transmission
3.2.1 Text
1.Transmission Gear Ratios
The modern manual transmission can provide the driver with up to six forward gear ratios. The reduction gears provide gear ratios of approximately 3.5:1 (stated as 3.5 to 1) for the lowest gear, to about 1.5:1 for the highest. The direct drive gear has a 1:1 gear ratio. The overdrive gears have a gear ratio of about 0.7:1.
[ə'prɔksimə tli]
adv.近似地，大约；许
bearing
['bɛəriŋ] n.[机]轴承，支座
mesh
[me∫]
vi.（机器零件）啮合
transaxle
[ֽtræ ns'æ k sl]
n.变速驱动桥
汽车工程专业英语
Chapter 1 Automotive Basics(1) Today s average car contains more than 15,000 separate, individual parts that must work together. These parts can be grouped into four majorcategories: body, engine, chassis and electrical equipment 。
当今的车辆一般都由15000多个分散、独立且相互配合的零部件组成。
这些零部件主要分为四类：车身、发动机、底盘和电气设备。
1.1 Body（车身）(2) The body is designed to keep passengers safe and comfortable. Thebody styling provides an attractive, colorful, modern appearance for the vehicle.车身的设计要保证乘客安全舒适。
车身的款式使得汽车看起来漂亮迷人、色彩斑斓、时尚前卫。
1.2 Engine（发动机）(3)The internal combustion engine is most common: this obtains its powerby burning a liquid fuel inside the engine cylinder. There are two typesof engine: gasoline and diesel . Both engines are called heat engines; the burning fuel generates heat which causes the gas inside the cylinder to increase its pressure and supply power to rotate a shaft connected to the transmission .内燃机是最常见的，其动力来自气缸里液体燃料的燃烧。
汽车工程专业英语 全文翻译
第一章汽车基础当今的汽车一般都由15000多个分散、独立且相互配合的零部件组成。
这些零部件主要分为四类：车身、发动机、底盘和电气设备。
Body：车身Engine：发动机Brakes：制动器Power train：传动系Steering：转向系Electrical：电器及电子设备Suspension：悬架Layout of a passenger car：乘用车总布置Layout of a commercial vehicle：商用车总布置1.1 车身汽车车身是由车窗、车门、发动机罩和行李箱盖焊接在金属板外壳内而成。
金属板外壳将发动机、乘客和货物覆盖以提供保护。
车身的设计要保证乘客安全舒适。
车身的款式使得汽车看起来漂亮迷人、色彩斑斓、时尚前卫。
私家轿车有一个封装起来的车身，4个大车门允许乘客进出车厢。
这个设计也可放置行李或其他货物。
私家轿车也可以称为拥有固定车顶的传统车辆。
有许多类似车身设计的活顶式车除了拥有两个车门，其他的设计和敞篷车大致一样。
皮卡或载重汽车。
通常它们有比轿车大的底盘和悬架来支撑重物质量。
轻型运载货车基于轿车的设计并改装以便腾出最大限度的空间来装载货物。
商用运载货物车辆的车身是专用设计的。
如罐车运载液体，自卸车搬运泥土或大批谷物，平板车和货车通常用来运载普通货物。
公交车或长途汽车通常是4轮固定模式的车辆，但会用到大量的车轮和轮轴。
有时，铰接式公交车是为了增加容量。
公交车和货车可以做成单层或双层的。
长途汽车常用于长距离运载，且费用比较昂贵，因此市区里就会用到公交车，如市郊间上下班时用于交通运输。
1.2 发动机发动机作为动力装置。
最常见的内燃机通过燃烧发动机气缸里的液体燃料而获得能量。
内燃机有两种类型：汽油机（又称为点燃式发动机）和柴油机（又称为压燃式发动机）。
两种类型均称为热力发动机。
燃烧燃料产生的热量使汽缸里气体的气压增加并提供能量通过传动轴连接到传动系统。
发动机气缸的排列方式称为发动机配置。
车辆工程专业英语复习资料
车辆工程专业英语复习资料1.The four-stroke spark-ignition engine cycle consists:induction stroke (intake stoke), compression stroke, power stroke, exhaust stroke.（四冲程点燃式发动机行程包括：进气行程，压缩行程，作工行程，排气行程。
）2.内燃机：internal combustion engine 外燃机：externalcombustion engine3.The lower the gear ratio selected, the higher the torquetransmitted.（选择的齿轮齿数越少，传递的扭矩越大）4.Different gear 差速器drive shaft 传动轴 final drive 主减速器 universal joints 万向节 steering box 转向器5.These parts can be grouped into four major categories:Body ,Engine, Chassis and electrical system.（这些部件可组成四个主要部分：车身、发动机、底盘和电路系统）6.the purpose of the complete suspension system is to isolatethe vehicle body form road shocks and vibrations,which will otherwise be transferred to the passengers and load.（整个悬架系统的目的是分离车身来自路面的冲击和振动，否则会被传递给乘客和货物。
）7.tube tires 有内胎轮胎 drum brakes鼓式制动器 discbrakes盘式制动器8.most modern lighe vehicles have either disc brakes on thefront wheels and drum brakes on the rear or disc brakes on all 4 wheels大多数现代光车是前轮采用盘式制动鼓上的所有4个车轮后面或盘式制动器制动器9.the electrical system supplies electricity for thestarter，ignition，lights and heater电气系统为起动机、点火系统、照明灯具、取暖器提供电能10.the sparks must be supplied at the right time and theysufficient energy over a range of conditions to ignite the charges火花必须在正确的时间提供足够的能量，他们在一系列的条件下点燃的指控11.distributor分电器 spark plug 火花塞12.Energy is used to produce power. The chemical energy infuel is converted to heat by the burning of the fuel at a controlled rate.（能量是用来产生动力的，燃料中的化学能通过控制其比例进行燃烧可转化成热能。
汽车工程专业英语(汉化版)
Automotive Engineering English （Chinese Edition ）汽车工程专业英语（汉化版）CONTENTSChapter 1 Automotive basics (2)1.1 The history of automotive (2)1.2 Classification of automotives (3)1.3 Principal Components (6)Review questions (13)Chapter 2 Engine (14)2.1 Overview (14)2.2 Engine construction (15)2.3 The engine operation (26)2.4 Basic engine systems (29)2.5 Air induction System (31)2.6 Gasoline fuel System (32)2.7 Engine Cooling (40)2.8 Engine Lubrication (44)2.9 Diesel engine (46)2.10 Emission Control (53)Review questions (61)目录第一章汽车的基础 (2)1.1 汽车的历史 (2)1.2. 汽车的分类 (3)1.3 汽车的主要组成部分 (6)复习题 (13)第二章发动机 (14)2.1 概述 (14)2.2 发动机的结构 (15)2.3 发动机的运转 (26)2.4 发动机的基本系统 (29)2.5 进气系统 (31)2.6 汽油供给系统 (32)2.7 发动机冷却系统 (40)2.8 发动机润滑系统 (44)2.9 柴油发动机 (46)2.10 排放控制 (53)复习题 (61)Capture 1 Automotive basis第一章汽车的基础1.1 The history of automobile1.1汽车的历史The automotive industry affects many areas of the economy. Starting with the first patented gasoline-powered Benz Motorwagen in 1886(Figure 1.1)，the automotive industry has seen continuous and exciting changes for over a century. The early gasoline-powered automobile generated 1.5hp(1.1kW)，it reaches top speed of 3~5mph(5~8km/h).Today's average vehicles have 110~450hp(80~330kW )engines and cruise at 106~120km/h，depending on the legal speed limit. For many people around the world，automotives are the most important means of personal transportation.汽车工业影响经济的许多领域。
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Chapter 1 Automotive Basics（汽车基础）(1) Today s average car contains more than 15,000 separate, individual parts that must work together. These parts can be grouped into four major categories: body, engine, chassis and electrical equipment 。
当今的车辆一般都由15000多个分散、独立且相互配合的零部件组成。
这些零部件主要分为四类：车身、发动机、底盘和电气设备。
1.1 Body（车身）(2) The body is designed to keep passengers safe and comfortable. The body styling provides an attractive, colorful, modern appearance for the vehicle.车身的设计要保证乘客安全舒适。
车身的款式使得汽车看起来漂亮迷人、色彩斑斓、时尚前卫。
1.2 Engine（发动机）(3)The internal combustion engine is most common: this obtains its power by burning a liquid fuel inside the engine cylinder. There are two types of engine: gasoline and diesel . Both engines are called heat engines; the burning fuel generates heat which causes the gas inside the cylinder to increase its pressure and supply power to rotate a shaft connected to the transmission .内燃机是最常见的，其动力来自气缸里液体燃料的燃烧。
发动机有汽油机和柴油机两种，都称为热机燃料燃烧产生热量，使得气缸内气体压力升高，从而提供动力，带动连接变速器的轴旋转.1.3 Chassis（底盘）1.3.3 Suspension（悬架）(4) The purpose of the complete suspension system is to isolate the vehicle body from road shocks and vibrations, which will otherwise be transferred to the passengers and load. It must also keep the tires in contact with the road regardless of road surface.整个悬架系统的作用是隔离来自路的冲击和振动对车身的影响,防止它们传递给乘客和货物。
另外不论路面如何,悬架系统都应该保持轮胎和路的接触。
1.3.4 Braking（制动）(5) Drum brakes have a drum attached to the wheel hub, and braking occurs by means of brake shoes expanding against the inside of the drum. With disc brakes, a disc attached to the wheel hub is clenched between two brake pads.在鼓式制动器上，制动鼓和轮毂连接，制动蹄张开压紧制动鼓内侧从而产生制动。
在盘式制动器上，连着轮毂的制动盘，被紧紧夹在两个制动块之间。
1.4 Electrical system（电气系统）(6) The electrical system supplies electricity for the starter, ignition, lights and heater. The electricity level is maintained by a charging circuit. 电器系统为起动机、点火系、照明和加热设备提供电流。
电流的大小由充电电路来维持。
Chapter 2 Internal Combustion Engine （内燃机）2.1.2 Engine Terms（发动机条款）2) Linking the piston by a connecting rod to a crankshaft causes the gas to rotate the shaft through half a turn. The power stroke "usesup" the gas, so means must be provided to expel the burnt gas and recharge the cylinder with a fresh petrol-air mixture: this control of gas movement is the duty of the valves; 活塞通过连杆和轴连接，使得气体带动轴旋转半圈。
作功冲程耗尽了所有的气体，这样就必须采取相应的措施排出废气以及向气缸内再充入新鲜的可燃混合气：气体的运动由气门来控。
2.2.1 Engine Block（发动机缸体）1) The engine block is the basic frame of the engine. All other engine parts either fit inside it or fasten to it. It holds the cylinders, water jackets, and oil galleries. The engine block also holds the crankshaft, which fastens to the bottom of the block. 缸体是发动机的基体。
发动机其它的部件都安装或固定在缸体上，包括气缸、水套和油道，以及固定在缸体底部的曲轴等。
2.2.2 Cylinder Sleeves（气缸套）2) Cylinder sleeves are used in engine blocks to provide a hard wearing material for pistons and piston rings. The block can be made of one kind of iron that is light and easy to cast while the sleeves uses another that is better able to stand up wear and tear. There are two main types of sleeves: dry and wet. 缸体中的气缸套为活塞和活塞环提供了一种坚硬耐磨的材料。
缸体可以采用某种重量轻且易铸造的铁来制造，而缸套使用的却是另一种更加耐磨损的材料成。
主要有两种类型的气缸套：干缸套和湿缸套。
2.2.3 Cylinder Head（缸盖）3) The cylinder head fastens to the top of the block, just as a roof fits over a house. The underside forms the combustion chamber with the top of the piston. In-line engines of light vehicles have just one cylinder head for all cylinders; larger in-line engines can have two or more. 气缸盖安装在缸体的顶部，就像安在房子上的屋顶一样。
缸盖的下方和活塞顶部形成燃烧室。
轻型车上使用的直列发动机，所有气缸仅有一个气缸盖，较大的直列发动机有两个或更多缸盖。
2.2.5 Oil Pan or sump （油盘或油底盖）4) The oil pump in the lubricating system draws oil from the oil pan and sends it to all working parts in the engine. The oil drains off and runs down into the pan. Thus, there is constant circulation of oil between the pan and the working pats of the engine. 润滑系的机油泵从油底壳抽出机油并把机油输送给发动机的所有工作部件。
机油从油底壳流进流出.因而在油底壳和发动机的工作部件之间就有机油定向循环流动。
2.3.2 Piston Assembly(活塞总成)1) Most pistons are made from cast aluminum. The piston, through the connecting rod, transfers to the crankshaft the force created by the burning fuel mixture. This force turns the crankshaft.大多数活塞由铝铸造而成。
通过连杆的作用，活塞把可燃混合气燃烧产生的力传递给曲轴，带动曲轴旋转。
2) In diesel engines, the combustion chamber may be formed totally or in part in the piston crown, depending on method of injection. 柴油机发动机根据喷油方法不同，活塞头部可以形成全部燃烧室，也可以是燃烧室的一部分．3）Piston Rings（活塞环）In modern engines, each piston has three rings. (Piston in older engines Gas Rings sometimes had four rings, or even five.) The inside surface of the ring fits in the groove on the piston. The ring's outside surface presses againstthe cylinder walls. 在新型发动机上，每个活塞有三个活塞环。